Roof for boilers.



No. 679,460. Patantod July 30, I90l.

' W. KENNEDY.

RUUF FUR BOILERS.

(Application filed Nov. 14, 1900.)

3 Sheets-8heet 1.

(NB Iodal.)

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INVENTOR on LI Att'y.

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' n! "cams Pawns co, pncroumofl man No. 679,460. Patanted July 30, mm.w. KENNEDY.

BDOF FOR BOILERS.

(Application Nov. 14, 1 900.) filo llndel.) 3 Sheets-Sheet 2.

WITIIISSIB: INVINTOR No. 679,460. Patantad July 30, l90l. W. KENNEDY.

ROOF FOB BOILERS.

(Application filed Nov. 14, 1900.) (No Model.) 3 Shun-Sheet 3.

WITNESSES: INVINTO A whua l UNITED STATES A PATENT OFFICE.

WALTER KENNEDY, OF ALLEGHENY, PENNSYLVANIA.

ROOF FOR BOILERS.

SPECIFICATION formingpart of Letters Patent No. 679,460, dated July 30,1901.

Application filed November 14, 1900. Serial No. 36,498. (No model.)

To aZZ whom it may concern.-

Be it known that I, WALTER KENNEDY, a citizen of the United States,residing at Allegheny, in the county of Allegheny and State ofPennsylvania, haveinvented or discovered certain new and usefulImprovements in Roofs for Boilers, of which improvements the followingis a specification.

To protect boilers which are not located in a building, it is thepractice to arrange a roof over them, and in order to avoid the expenseof separate foundations for the supports for such roof it is proposed toattach such supports to the boiler or the casing thereof. The boiler andeasing frequently shift their positions when in use. Hence it is evidentthat such a roof if made rigid and rigidly attached to a battery of twoor more boilers would be subjected to severe strains, as the movementsof the individual members forming the battery are seldom the same or inthe same direction.

The object of the present invention is to provide a roof one of thesections of which shall be rigid and rigidly attached to one of themembers of the battery, so as to serve as an anchor for the othersections, which are flexibly connected to the anchoring-sections and1 tothe member of the battery covered by eac 1.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a top plan view of my improved roof. Fig. 2 is a sideelevation of the same, showing the upper portion of the boilersprotected by the roof. Fig. 3 is an end elevation of the rigid or anchormember of the roof. Figs. 4, 5, and 6 are detail views of parts of theflexible members or sections. Fig. 7 is an end elevation of one of theflexible members or sections of the roof.

In the practice of my invention I secure to the upper portion of one ofthe boilers of the battery, or, preferably, the casing thereof, fourposts or standards 1, which have their ends rigidly secured to theboiler-casing. To the upper ends of these posts or uprights are rigidlysecured the several roof-trusses,which may be of any desired form orconstruction. The rafters of the truss of this anchor or rigid sectionare connected by purlins 3, rigidly bolted or riveted to the rafters 2.In order to render this section more rigid and firm, the posts aresecured together by means of diagonal braces 4E, and the roof-trussesare similarly braced by diagonal rods 5, as shown in Figs. 1, 2, and 3.

It is preferred that the ends of the side braces 4 should bedouble-riveted to plates 6 at the corners of the structure and that thebraces where they cross each other should be riveted together. Thisconstruction will render what I term the anchor-section quite rigid andits connection to the boiler-casing which it covers also rigid, so thatthe roof structure will partake of the movements of the boiler-casing.

The flexible sections consist of posts or uprights 7, two extending fromeach boilercasing, as shown in Fig. 2, and having their lowerendspivotally connected to such boiler casing, as clearly shown in Fig. 5,where a single rivet or bolt 8 serves to connect these posts or uprightswith the plate 6, which is riveted to the boiler-casing. To the upperends of these posts 7 are pivotally secured the roof-trusses 9, theconnection between the posts and trusses being preferably formed byasingle rivet or bolt 10, as shown in Fig. 7. The purlins 11, connectingthe roof-trusses 9 to the trusses of the anchor-section and of theadjacent flexible sections, are attached thereto in such manner as willpermit the movement of the trusses 9 independent of each other and ofthe anchor member or section of the roof. Such connection isconveniently formed, as shown in Figs. 4 and 6, by slotting the ends ofthe purlins and connect ing them to the rafters of the roof by a singlerivet or bolt. The posts 7 of each flexible section are laterally bracedby diagonal braces 12, which have their ends connected bya single rivetor bolt to the corner-plates 6 of such section, so as not to interferewith the movements of the posts while holding them in proper relativepositions.

As will be readily understood from the foregoing, the roof-sectionscovering boilers of the battery other than that having the rigid sectioncan partake of the movements of the boiler-casings to which they areconnected without any undue strain either to themanchor-section and theother section or sec-' tions being loosely connected to the other boileror boilers orcasings thereof, and loosely connected to theanchor-section, substantially as set forth.

2. The combination of a battery of two or more boilers, posts rigidlyconnected to one of the boilers or casing thereof, a roof supported byand secured to said posts, posts loosely connected to the other boileror boilers or casings thereof, roofs supported by and loosely connectedto said posts and loosely connected to the anchor-section, substantiallyas set forth.

3. The combination of one or more boilers, roof-sections looselysupported on said boiler or boilers or the casings thereof, and ananchor for holding said section or sections over the boiler, or boilers,substantially as set forth.

In testimony whereof I have hereunto set my hand.

WALTER KENNEDY.

Witnesses:

DARWIN S. WoLooTT, F. E. GAITHER.

